RF Safe founder John Coates publishes an open letter urging YouTuber MrBeast (Jimmy Donaldson) to make any potential “Beast Mobile” offering explicitly child-protective and “Li‑Fi compatible,” arguing that phones carried close to the body could scale long-term RF exposure among children. The letter frames current regulatory compliance as insufficient for a youth-focused brand and claims that “non-native EMFs” may disrupt biological timing and redox processes via an “S4–Mito–Spin” framework. The piece is advocacy-oriented and does not present new study data in the provided text.

RF Safe argues that a potential MrBeast-branded mobile service (“Beast Mobile”) could drive high adoption among children and therefore raises ethical concerns about children’s exposure to radiofrequency (RF) emissions from always-on, body-worn devices. The post claims the scientific and legal context has shifted and contends that relying on existing regulatory compliance is insufficient, urging a “LiFi compatibility plan” as an exposure-reduction alternative. It cites modeling literature about potentially higher localized absorption in children and references a 2025 systematic review it says found increased cancer incidence in RF-exposed experimental animals, while framing the overall situation as negligence if child-focused marketing proceeds without additional safeguards.